Results 21 to 30 of about 63,643 (106)

Variable Selection for Generalized Linear Mixed Models by L1-Penalized Estimation [PDF]

open access: yes, 2011
Generalized linear mixed models are a widely used tool for modeling longitudinal data. However, their use is typically restricted to few covariates, because the presence of many predictors yields unstable estimates.
Groll, Andreas
core   +5 more sources

Predicted Residual Error Sum of Squares of Mixed Models: An Application for Genomic Prediction. [PDF]

open access: yes, 2017
Genomic prediction is a statistical method to predict phenotypes of polygenic traits using high-throughput genomic data. Most diseases and behaviors in humans and animals are polygenic traits. The majority of agronomic traits in crops are also polygenic.
Xu, Shizhong
core   +2 more sources

Derivative Computations and Robust Standard Errors for Linear Mixed Effects Models in lme4 [PDF]

open access: yes, 2017
While robust standard errors and related facilities are available in R for many types of statistical models, the facilities are notably lacking for models estimated via lme4.
Merkle, Edgar C., Wang, Ting
core   +3 more sources

The analysis of very small samples of repeated measurements II: a modified box correction [PDF]

open access: yes, 2010
There is a need for appropriate methods for the analysis of very small samples of continuous repeated measurements. A key feature of such analyses is the role played by the covariance matrix of the repeated observations.
Bellavance   +22 more
core   +2 more sources

A GABAergic projection from the centromedial nuclei of the amygdala to ventromedial prefrontal cortex modulates reward behavior [PDF]

open access: yes, 2016
The neural circuitry underlying mammalian reward behaviors involves several distinct nuclei throughout the brain. It is widely accepted that the midbrain dopamine (DA) neurons are critical for the reward-related behaviors.
Bhatti, Dionnet L   +9 more
core   +2 more sources

Mean squared error of empirical predictor

open access: yes, 2004
The term ``empirical predictor'' refers to a two-stage predictor of a linear combination of fixed and random effects. In the first stage, a predictor is obtained but it involves unknown parameters; thus, in the second stage, the unknown parameters are ...
Das, Kalyan   +2 more
core   +2 more sources

Penalized additive regression for space-time data: a Bayesian perspective [PDF]

open access: yes, 2003
We propose extensions of penalized spline generalized additive models for analysing space-time regression data and study them from a Bayesian perspective.
Fahrmeir, Ludwig   +2 more
core   +3 more sources

Selection of pineapple hybrids via genotypic values (REML/BLUP) for fruit mass and total soluble solids

open access: yes, 2021
The ranking of hybrids via genotypic values stands out due to its maximum selective accuracy in relation to ordering based on phenotypic values, which incorporate environmental effects, causing changes in the final classification.
J. S. Júnior   +2 more
semanticscholar   +1 more source

Likelihood inference for small variance components

open access: yes, 2000
In this paper, we develop likelihood-based methods for making inferences about the components of variance in a general normal mixed linear model. In particular, we use local asymptotic approximations to construct confidence intervals for the components ...
Stern, S.E., Welsh, A.H.
core   +2 more sources

Increased heterozygosity and allele variants are seen in Texel compared to Suffolk sheep [PDF]

open access: yes, 2004
In this study, the Suffolk and Texel sheep breeds were compared for microsatellite marker heterozygosity throughout seven chromosomal regions in the sheep genome.
A Farid   +48 more
core   +1 more source

Home - About - Disclaimer - Privacy